Year	Percent
1983-01-01	11.0053000000000000
1984-01-01	10.4232000000000000
1985-01-01	9.9675300000000000
1986-01-01	9.3139800000000000
1987-01-01	8.0140000000000000
1988-01-01	6.0718300000000000
1989-01-01	4.8693100000000000
1990-01-01	6.0931100000000000
1991-01-01	4.9816400000000005
1992-01-01	4.5986100000000000
1993-01-01	4.9858699999999990
1994-01-01	8.1611500000000000
1995-01-01	8.3846700000000000
1996-01-01	10.0473000000000000
1997-01-01	10.8243000000000000
1998-01-01	11.1490000000000010
1999-01-01	10.2683000000000000
2000-01-01	8.4601500000000000
2001-01-01	7.5413399999999990
2002-01-01	9.6713600000000000
2003-01-01	8.8331200000000000
2004-01-01	10.3841000000000000
2005-01-01	10.0236000000000000
2006-01-01	17.1193000000000000
2007-01-01	20.0870000000000000
2008-01-01	17.3826000000000000
2009-01-01	15.2939000000000000
2010-01-01	14.4892000000000000
2011-01-01	16.0020000000000000
2012-01-01	12.8774000000000000
2013-01-01	12.3929000000000000
2014-01-01	11.7992000000000000
2015-01-01	12.0112000000000000
2016-01-01	10.9917000000000000